Bat plant is the common name for Tacca nivea, a tropical evergreen from Malaysia. The name comes from its appearance. Large white petals stand above dark flowers and long bracts and together these make it look like a bat face.
In this photo the two petals are not standing up, but are lying on top of the flowers so the look is different, but still striking. I’ll have to go back again at a different time to catch it with standing petals.
This one was at Hawaii Tropical Botanical Garden. For more information about Hawaii Tropical Botanical Garden, go to htbg.com.